GRACE W PIEN MD
NPI 1427077650
Internal Medicine - Sleep Medicine in Philadelphia, PA
About Grace W Pien Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GRACE W PIEN MD (NPI 1427077650) is an individual sleep medicine provider in Philadelphia, Pennsylvania, licensed in Pennsylvania (MD069768L) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS, is affiliated with Hospital Of Univ Of Pennsylvania, and is a graduate of Columbia University College Of Physicians And Surgeons (1994).
NPPES Registry Identity
Specialties & Licenses 3
Other Identifiers 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Grace W Pien Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Grace Pien reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Philadelphia, PA 19104
- Reassigned Medicare billing, Pennsylvania enrollment
- 289 clinicians in this Medicare group
Belcamp, MD 21017
- Reassigned Medicare billing, Maryland enrollment
- 4,483 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 3
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Hospital Of Univ Of Pennsylvania
Acute Care Hospitals · Philadelphia, PAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 19104 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Referred Medical Equipment & Supplies CMS DME claims 15
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Grace Pien's NPI number?
The NPI number for Grace Pien is 1427077650. It was assigned to this individual provider in the NPPES registry on July 19, 2006.
Where is Grace Pien located?
Grace Pien practices at 3624 Market St Fl 2, Philadelphia, PA 19104. The listed phone number is (215) 662-7772.
What is Grace Pien's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Sleep Medicine, with taxonomy code 207RS0012X.
Is Grace Pien enrolled in Medicare?
Yes. Grace Pien is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Grace Pien's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Grace Pien reassigns Medicare benefits to 2 organizations: University Of Penn - Medical Group (Philadelphia, PA) and Johns Hopkins University (Belcamp, MD). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Grace Pien's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Grace Pien accept?
Health plans from Ambetter Health, Ambetter Health of Delaware and Ambetter from Buckeye Health Plan list Grace Pien as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Grace Pien affiliated with any hospitals?
According to CMS data, Grace Pien is affiliated with Hospital Of Univ Of Pennsylvania.
When was this NPI record last updated?
The NPPES record for Grace Pien was last updated on September 17, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Grace W Pien, MD · NPI 1427077650
Sleep Medicine physician in Philadelphia, Pennsylvania. Individual provider, active in the CMS NPPES registry since July 19, 2006.
## Identity
- **NPI:** 1427077650 (Entity type: Individual)
- **Enumerated:** July 19, 2006
- **Primary specialty:** Internal Medicine - Sleep Medicine · taxonomy 207RS0012X
- **State license:** MD069768L (Pennsylvania)
- **Sole proprietor:** No
## Practice location
- **Address:** 3624 MARKET ST FL 2, Philadelphia, PA 19104-5803
- **Phone:** (215) 662-7772 · **Fax:** (215) 349-8038
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): University Of Penn - Medical Group (NPI 1629181912, Philadelphia, PA); Johns Hopkins University (NPI 1376342774, Belcamp, MD) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Columbia University College Of Physicians And Surgeons, class of 1994
## Record status
- **NPPES last updated:** September 17, 2023
- **Other identifiers:** Medicaid 0018841520001 (PA)
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Source: [NPI Profile](https://npiprofile.com/npi/1427077650) · Data from the CMS NPPES public registry.